/*
 * Copyright 2008 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.zxing.client.result;

import java.util.ArrayList;
import java.util.List;

import com.google.zxing.Result;

/**
 * Implements the "BIZCARD" address book entry format, though this has been
 * largely reverse-engineered from examples observed in the wild -- still
 * looking for a definitive reference.
 *
 * @author Sean Owen
 */
public final class BizcardResultParser extends AbstractDoCoMoResultParser {

    // Yes, we extend AbstractDoCoMoResultParser since the format is very much
    // like the DoCoMo MECARD format, but this is not technically one of
    // DoCoMo's proposed formats

    @Override
    public AddressBookParsedResult parse(Result result) {
        String rawText = getMassagedText(result);
        if (!rawText.startsWith("BIZCARD:")) {
            return null;
        }
        String firstName = matchSingleDoCoMoPrefixedField("N:", rawText, true);
        String lastName = matchSingleDoCoMoPrefixedField("X:", rawText, true);
        String fullName = buildName(firstName, lastName);
        String title = matchSingleDoCoMoPrefixedField("T:", rawText, true);
        String org = matchSingleDoCoMoPrefixedField("C:", rawText, true);
        String[] addresses = matchDoCoMoPrefixedField("A:", rawText, true);
        String phoneNumber1 = matchSingleDoCoMoPrefixedField("B:", rawText, true);
        String phoneNumber2 = matchSingleDoCoMoPrefixedField("M:", rawText, true);
        String phoneNumber3 = matchSingleDoCoMoPrefixedField("F:", rawText, true);
        String email = matchSingleDoCoMoPrefixedField("E:", rawText, true);

        return new AddressBookParsedResult(maybeWrap(fullName),
                null,
                null,
                buildPhoneNumbers(phoneNumber1, phoneNumber2, phoneNumber3),
                null,
                maybeWrap(email),
                null,
                null,
                null,
                addresses,
                null,
                org,
                null,
                title,
                null,
                null);
    }

    private static String[] buildPhoneNumbers(String number1,
                                              String number2,
                                              String number3) {
        List<String> numbers = new ArrayList<>(3);
        if (number1 != null) {
            numbers.add(number1);
        }
        if (number2 != null) {
            numbers.add(number2);
        }
        if (number3 != null) {
            numbers.add(number3);
        }
        int size = numbers.size();
        if (size == 0) {
            return null;
        }
        return numbers.toArray(new String[size]);
    }

    private static String buildName(String firstName, String lastName) {
        if (firstName == null) {
            return lastName;
        } else {
            return lastName == null ? firstName : firstName + ' ' + lastName;
        }
    }

}
